Next stop for immigration fight? The 2016 GOP primary

Sen. Marco Rubio, R-Fla., flanked by Sen. Charles Schumer, D-N.Y., left, and Sen. John McCain, R-Ariz., right, speaks as immigration reform legislation by the Senate's bipartisan "Gang of Eight" that would create a path for the nation's 11 million unauthorized immigrants to apply for U.S. citizenship, Thursday, April 18, 2013, on Capitol Hill in Washington. (AP Photo/J. Scott Applewhite)

Next stop for immigration fight? The 2016 GOP primary

The debate over the Senate immigration bill goes two places after today.One is the House of Representatives, where the bipartisan proposal will be sent after being approved by a wide margin. The other is the 2016 Republican presidential primary.It's not clear how the debate will play out then. Grassroots conservatives may punish candidates who were involved with the bill or argued for it. On the other hand, primary voters may want to avoid the issue so as not to damage …